Chemistry: Acid Base Titration Essay

463 words - 2 pages

Chemistry: Acid-Base Titration

     The objective of this experiment were: a) to review the concept of
simple acid-base reactions; b) to review the stoichiometric calculations
involved in chemical reactions; c) to review the basic lab procedure of a
titration and introduce the student to the concept of a primary standard and the
process of standardization; d) to review the calculations involving chemical
solutions; e) to help the student improve his/her lab technique.

     Titration was used to study acid-base neutralization reaction
quantitatively. In acid-base titration experiment, a solution of accurately KHP
concentration was added gradually to another solution of NaOH concentration
until the chemical reaction between the two solutions were completed. The
equivalence point was the point at which the acid was completely reacted with or
neutralized by the base. The point was signaled by a changing of color of an
indicator that had been added to the acid solution. Indicator was substance that
had distinctly different colors in acidic and basic media. Phenolphthalein was a
common indicator which was colorless in acidic and neutral solutions, but
reddish pink was result in basic solutions. Strong acid (contained H+ ion) and
strong base ( contained OH ) were 100% ionized in water and they were all
strong electrolytes. Procedure:

Part A. Investigating solid NaOH for use as a possible primary standard First of
all, The weight of a weighting paper was measured in analytical balance, then
added two pellets of NaOH and...

Find Another Essay On Chemistry: Acid-base Titration

Determination of an unknown amino acid from a titration curve

1691 words - 7 pages acidic salt form of the amino acid. Likewise, if NaOH were added, the resulting amino acid would be sodium glycinate (see fig. 3), an example of a basic salt form.Fig. 2Fig. 3Due to the nature of amino acids, a titration curve can be employed to identify an unknown amino acid.A titration curve is the plot of the pH versus the volume of titrant used. In the case of amino acids, thetitrant will be both an acid and a base. The acid is a useful tool

Titration of amino acids Essay

652 words - 3 pages weak acids with a strong base will be used to graph the titration curves and these titration curves will be used to identify an unknown acid by comparing its dissociation constant with dissociation constant of other known acids.IntroductionThe effects of pH and buffers play an important role in the protonation and deprotonation of water. Many organisms survival depend on the pH levels; therefore, the important of understanding of the response of

Chemistry: What is A Complexometric Titration

3189 words - 13 pages (Sheribah), The Schwarzenbach concept states that: A metal-ligand interaction is considered as an acid-base reaction but “metal ions cannot be titrated with simple ligands as ammonia or cyanide”, as the complex formed by the reaction does not produce a sharp and definite endpoint. This makes it difficult to construct a titration curve. [8] H+ + NH3

Organic Synthesis: Preparation & Analysis of Aspirin

856 words - 3 pages would be very slow if we use just titration. Using strong base and strong acid is easy to indicate the end points.Now when we have aspirin, we placed 0.3 g into 250 ml flask and mixed with 50 ml of distilled water. Then we heated mixture to dissolve aspirin, and after cooling we add 3 drops of phenolphthalein indicator into mixture, which is going to help us determine equivalence point after we start pouring into mixture NaOH strong base

Experiment on Titrimetry

1675 words - 7 pages In this experiment we are trying to identify an unknown acid or base and its concentration by using the method of titration. The pKa values and the titration curve help aid in identifying of the unknown. In our case we had a base as our unknown (analyte). The use of a certain amount of sodium hydroxide and hydrochloric acid will be used to titrate the unknown solution that is given. This is the tirant. We used hydrochloric acid as our titrant

Titration Scientific Report

483 words - 2 pages Year 10 chemistry2014Extended Experimental InvestigationSCHWEPPEVESENCE -FACT OR FICTIONIntroductionIn this experiment, we try to find out the reaction between Schweppes and weak acid. Acid-base titration is a chemical measurement methods, the Department of strong acid or base titration with alkali or acid solution by titration graphs or color change indicator titration end point determination, it can be roughly determined the concentration of

Potentiometeric Titrations

1640 words - 7 pages titration was continued until a jump occurred between the pH indicating that an equivalence point had been reached somewhere between the jump. Next a more accurate titration was performed, meaning recording more data points around the equivalence point by adding smaller amounts of base. The pH meter was calibrated again, and 50 mL of Formic Acid was dispensed into a 250 mL beaker. The pH meter was placed in the beaker, and we started with 0.20 mL

Complexometric Titration

2854 words - 11 pages mixture of different metals (1). There are 4 types of complexometric titrations, namely direct titration, back titration, replacement titration and indirect titration (3). Direct titration is similar to an acid-base titration, whereby a standard chelon solution is added to the metal ion until the endpoint is detected (3). Although this method is the most convenient, it is limited by slow complexation reaction and interference due to the

Carbon Dioxide content of softdrinks

605 words - 2 pages endpoint is the point at which the titration is stopped. This is classically a point at which the number of moles of titrant is equal to the number of moles of analyte, or some multiple thereof (as in di- or tri- protic acids).Many methods can be used to indicate the endpoint of a reaction; titrations often use visual indicators (the reactant mixture changes colour). In this experiment and simple acid-base titrations a pH indicator may be used, such

Essay & Research Project #2

1019 words - 4 pages acid is added with a metal, salt and hydrogen are produced. Hydrogen, which quickly bubbles off during the reaction is displaced by the metal added. The bubbles will stop when all the acid has been used up.When an acid is added with a base, salt and water are produced.When an acid is added with a carbonate, salt, water and carbon dioxide are produced.2. Explain the test for carbonate ions using dilute hydrochloric acid and limewater.Carbonate ions

Determination of Zinc and Nickel Concentration by (1) Ion-Exchange Chromatography Followed by Chelometric Titration, and by (2) Atomic Absorption Spectroscopy of the Mixture

1331 words - 5 pages reacted with the resin. It could not pass through the column until a neutral aqueous solution was run through. The elements were determined quantitatively by titration with ethylenediaminetetraacetic acid (EDTA). This method is valued as a good estimate and is used widely because of its use of common lab equipment. Only a single column was run for each metal in the interest of time. To acquire a meaning for the effect that the method has on the

Similar Essays

Acid Base Titration Chemistry Formal Lab Writeup By A.Mm

1532 words - 6 pages AbstractBy using acid-base titration, we determined the suitability of phenolphthalein and methyl red as acid base indicators. We found that the equivalence point of the titration of hydrochloric acid with sodium hydroxide was not within the ph range of phenolphthalein's color range. The titration of acetic acid with sodium hydroxide resulted in an equivalence point out of the range of methyl red. And the titration of ammonia with hydrochloric

Acid/Base Chemistry Essay

1400 words - 6 pages source (Pandell 1999). This is the acidity of all the different acids making up this substance. In all wines one of the most predominant acids is tartaric acid (Lamikanra 1997). pH is a scale from 1-14; to calculate it one takes the negative log of the hydronium ion concentration. One is very acidic, 7 is neutral, and 14 classified as a strong base. Therefore, wine would be considered an acidic beverage according to this scale. While something like

Acid Base Chemistry Lab Essay

1416 words - 6 pages titratable acidity, °Brix, pH, potassium content, malate and tartrate during berry development of Thompson seedless grapes. J. Food Sci. 38:874-876. Son HS, Hong YS, Park WM, Yu MA, Lee CH. 2009. A novel approach for estimating sugar and alcohol concentrations in wines using refractometer and hydrometer. J. Food Chem. 74:106-111. Thompson LD, Dinh T. 2009. Acid-Base Chemistry. FDSC 4303/5303 food chemistry laboratory manual. Lubbock, Tx

This Is A Chemistry Lab Report On An Acid Base Titration Experiment

2736 words - 11 pages ). This will be accomplished using the titration method. The KHP solution will be created and its volume and concentration recorded. The KHP solution will be poured in a flask along with a few drops of one of three indicators we will be evaluating. The NaOH solution will be poured into a buret (with volume markers) and will be used as the titrant. The strong base will be added slowly to the acidic solution, gradually neutralizing the acid. The